信天游原唱程琳:帮我计算一下

来源:百度文库 编辑:神马品牌网 时间:2024/05/05 11:06:54
lg5*lg8000+lg1/6+lg0.06

lg5*lg8000+lg1/6+lg0.06
=lg5*(3*lg20)+lg(1/6*0.06)
=3*lg5*lg20+lg0.01
=3*lg5*(lg10+lg2)-2
=3*(1-lg2)(1+lg2)-2
=3*(1-lg2*lg2)-2
=1-3*lg2*lg2

0.728142825

0.728142825

0.728142825

0.728142825